Hey, I uploaded the demo with more visual feedbacks for users. I removed the package for source code, get it with the github link (easier for update)

I tested on the last version of Godot (3.2.1) and it still works fine.

https://www.youtube.com/watch?v=QdF_eiLjyJI

Here a little timeline about the visual aspect of the project. The resolution looks hugly but It's because of my computer. With a computer with a normal screen size it'll look good in game.

YouTube
https://www.youtube.com/watch?v=QdF_eiLjyJI
youtube.com